Applying coatings outside of the recommended thickness range / Chrissy Stewart in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 31, N° 2 (02/2014)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 31, N° 2 (02/2014) . - p. 15-23 Titre : Applying coatings outside of the recommended thickness range Type de document : texte imprimé Auteurs : Chrissy Stewart, Auteur ; Richard A. Burgess, Auteur Année de publication : 2014 Article en page(s) : p. 15-23 Langues : Américain (ame) Catégories : Analyse des défaillances (fiabilité) Cahier des charges Epaisseur -- Défauts Revêtements -- Défauts:Peinture -- Défauts Index. décimale : 667.9 Revêtements et enduits Résumé : The manufacturer's Product Data Sheet (PDS) should always be consulted when recommending a coating or coating system for a specification or when coatings will be applied. The PDS typically contains information regarding appropriate uses and environments, performance characteristics, and application information, including mixing, application methods and equipment, and the recommended thickness range for the mate-rial. The information provided by the manufacturer should be followed closely to maximize performance of the coating material. Coating materials are selected for application with a target application thickness in mind. The manufacturer's recommended range and the thickness indicated in the project specification should be in agreement. If a discrepancy exists, the specifier and the coating manufacturer should be contacted. When applied at the appropriate thickness, the physical and protective properties of the coating material are optimized. Often, a problem with coating performance can occur if not enough attention is given to the thickness at which the materials are to be applied. This article will investigate the possible failure mechanisms that can occur if a coating is applied at insufficient or excessive thickness. Note de contenu : - INSUFFICIENT COATING THICKNESS - CONSEQUENCES OF INSUFFICIENT COATING THICKNESS : Visibility of substrate - Pinpoint - Cracked, brittle coating - CONSEQUENCES OF EXCESSIVE COATING THICKNESS : Sagging and running - Cracking and delamination - Wrinling - Increased dry time - METHODS OF COATING THICKNESS MEASUREMENT : Took gage - Nondestructive coating thickness gage - Microscope equipped with scale Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21658 [article]

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Can in process quality control prevent premature coating failure ? / William D. Corbett in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 1 (01/2013)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 30, N° 1 (01/2013) . - p. 17-28 Titre : Can in process quality control prevent premature coating failure ? Type de document : texte imprimé Auteurs : William D. Corbett, Auteur ; Richard A. Burgess, Auteur Année de publication : 2013 Article en page(s) : p. 17-28 Langues : Américain (ame) Catégories : Qualité -- Contrôle Revêtements -- Corrosion:Peinture -- Corrosion Revêtements -- Défauts:Peinture -- Défauts Revêtements -- Fissuration Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : For decades we have heard that the incidence of premature coating failure would decline by explicitly requiring the contractor to control the quality of workmanship (via contract document language) using properly trained (and equipped) quality control personnel. In this case from the F-Files, we'll take a brief look at five case history failures and assess whether quality control inspection of the work as it proceeded could have prevented the failure from occuring, or whether it would have happened despite the effort of knowledgeable quality control personnel. Note de contenu : - Spontaneous cracking of the coating along the fillet weld - Poor adhesion of the coating of the top of the bottom flange - Corrosion of steel beneath alkyd primer evident within six months - Condition of the coating on the underside of the viaduc before brush-off blast cleaning - Area where epoxy mastic was applied directly to the steel rather than the aged alkyd Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17263 [article]

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Corrosion in less than one year is the pits ! / Valerie Sherbondy in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 33, N° 2 (02/2016)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 33, N° 2 (02/2016) . - p. 15-21 Titre : Corrosion in less than one year is the pits ! Type de document : texte imprimé Auteurs : Valerie Sherbondy, Auteur ; Richard A. Burgess, Auteur Année de publication : 2016 Article en page(s) : p. 15-21 Langues : Américain (ame) Catégories : Corrosion par piqure pH Pipelines -- Corrosion Pipelines -- Revêtements protecteurs Protection cathodique Revêtements poudre:Peinture poudre Surfaces -- Analyse Transition vitreuse Index. décimale : 667.9 Revêtements et enduits Résumé : Section Ioss of pipe wall is of great concern in the pipeline industry. Reduced wall thickness due to pitting corrosion can adversely impact pipeline integrity ; the results of which can be catastrophic depending on the product that the pipeline is transporting. In order to reduce the opportunity for corrosion, the use of protective coatings is often supplemented with irnpressed current cathodic protection (CP) systems to protect the pipe from corrosion, pitting and eventual perforation in the event of a breach in the protective coating system. In the instance discussed in this article, a pipe section that was excavated displayed severe pitting despite the application of a proven powder coating system and the installation of an impressed current CP system. A section of pipeline needed to be excavated in a relatively small area to accommodate new construction in the surrounding area. The pipeline was buried and put into service only about six months earlier, so corrosion and coating failure were not expected. However, failure of the powder coating system and severe pitting was evident on the excavated pipe section. The pipeline owner was notified to witness the excavation and to examine the condition of the pipe. After the initial section of pipe was excavated, additional lengths of pipe were exposed to determine the extent of the corrosion which was occurring in relatively deep pits that appeared randomly on the pipe sections in two areas. The other sections of excavated pipe revealed no visible corrosion. A section of the 24-inch pipe was removed and replaced. From this section a smaller 15-by-48-inch section was delivered to the laboratory along with a copy of the specification governing the application of the powder coating. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25628 [article]

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Failure at the jail / Richard A. Burgess in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 33, N° 4 (04/2016)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 33, N° 4 (04/2016) . - p. 16-23 Titre : Failure at the jail Type de document : texte imprimé Auteurs : Richard A. Burgess, Auteur Année de publication : 2016 Article en page(s) : p. 16-23 Langues : Américain (ame) Catégories : Constructions -- Défauts Délaminage Détection de défauts (Ingénierie) Epoxydes Expertises Matériaux cimentaires -- Détérioration Matériaux cimentaires -- Revêtements Revêtements de sols Index. décimale : 667.9 Revêtements et enduits Résumé : This article describes the failure of coatings applied to the concrete floors of a county detention facility. The structure is a multistory building with modular cells and concrete floors on each inmate level. The main structural floors were constructed of lightweight aggregate and the mezzanine floors constructed of a normal-weight aggregate. The facility was relatively new, becoming operational in September of 2015. The building could accommodate 608 inmates with the ability to add additional spaces as the population demanded. Note de contenu : - The investigation - Reviewing the available information - Photographic evidence - Core samples - Visual and microscopic examination - Sample 1 : Non-failing core sample findings - Sample 2 : Failing core sample findings - Sample 3 : Failing core sample findings - Sample 4 : Non-failing core sample findings - Infrared spectroscopy - Table : Concrete core floor and coatings and samples Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26163 [article]

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Improper selection of a maintenance strategy takes corrosion protection from bad to worse / Valerie Sherbondy in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 27, N° 1 (01/2010)

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 27, N° 1 (01/2010) . - p. 13-21 Titre : Improper selection of a maintenance strategy takes corrosion protection from bad to worse Type de document : texte imprimé Auteurs : Valerie Sherbondy, Auteur ; Richard A. Burgess, Auteur Année de publication : 2010 Article en page(s) : p. 13-21 Langues : Américain (ame) Tags : Structure  métallique  Corrosion  Maintenance  Revêtement  anticorrosion  Choix  revêtement  Spécification  Stratégie  lutte  corrosion Index. décimale : 667.9 Revêtements et enduits Résumé : When conducting a coating failure investigation. The investigator's first inquiries should be "what was supposed to be done", and "does it make sense ?" The answers to these questions are typically revealed in the specification for the project. However, in this "Case from the F-file," there was very little information in the specification to guide the investigation ; and there was little information available from the application, because in-process inspection was not performed. These circumstances made the failure much Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8389 [article]

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Incorrect mixing of multi-component coatings / Valerie Sherbondy in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 31, N° 4 (04/2014)

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MnDOT's approach to improving bridge maintenance painting operations / Sarah K. Sondag in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 33, N° 1 (01/2016)

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Saponification : from paint to the grave / E. Bud Senkowski in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 31, N° 5 (05/2014)

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The case of misplaced blame / Rick A. Huntley in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 27, N° 3 (03/2010)

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The case of shop painting going to waste / Jayson L. Helsel in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 27, N° 8 (08/2010)

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The case of the contractor who almost got floored / Raymond S. Tombaugh in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 5 (05/2013)

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The case of the mysterious hailstones / E. Bud Senkowski in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 2 (02/2013)

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The compromised propane tank coating / Jayson L. Helsel in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 11 (11/2013)

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the of going green ? Filiform corrosion of powder-coated aluminum on the gulf coast / Richard A. Burgess in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 26, N° 10 (10/2009)

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The sky is falling ! Or is it paint chips ? / Richard A. Burgess in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 10 (10/2017)  

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The "Whoas" of solvent entrapment and release / Richard A. Burgess in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 31, N° 3 (03/2014)

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